Not all plant-based milks are created equal. Certain base ingredients are more likely to spike blood sugar: Oat milk: Of all the options, “oat milk is the worst for blood sugar,” says Titgemeier. Even if an oat milk is unsweetened, the nutrition label will list added sugars.
In the 1980s, commercials claimed that milk does a body good. But with sales steadily declining in the last two decades, it’s clear not everyone agrees. Yes, milk can be an easy source of protein and calcium, but at the same time, some people can’t tolerate dairy, and others avoid it for other health or ethical reasons.
Enter milk alternatives. Made from nuts, seeds, and grains, these beverages are taking off: In 2020, Americans bought 20% more plant-based milks than they did in 2019. Whether you’re all-in on alternatives or you simply want to switch up your milk here and there, the variety of options offers something for everyone—but some are much better than others when it comes to metabolic health.
The Problems with Milk
Some people choose to eat dairy, but there are various reasons to avoid it altogether or at least minimize intake:
How to Choose a Milk Alternative
Most of these milks are made in a similar manner: The nut, seed, or legume is soaked. It’s then ground into a paste and any particles (from things like the outer shell on oats—the bran—or almond skins) are filtered out so the final product will be smooth. To turn the paste into a milk-like beverage, manufacturers add water, and sometimes other ingredients, such as sweeteners, vitamins, minerals, oils, salt, flavorings, and other substances that stabilize the mixture or give it consistency.
Two ingredients to look for and avoid:
Sugar: Different brands and flavors of non-dairy milk contain varying amounts of sweetener—sometimes more than 4 teaspoons of added sugars per serving. Vanilla and chocolate flavors tend to be the worst culprits. Always opt for unsweetened varieties.
Different brands and flavors of non-dairy milk contain varying amounts of sweetener—sometimes more than 4 teaspoons of added sugars per serving. Vanilla and chocolate flavors tend to be the worst culprits. Always opt for unsweetened varieties. Carrageenan: Some brands add this extract from red seaweed to thicken and stabilize plant-based milks. However, some research links carrageenan to gastrointestinal inflammation, which may lead to inflammatory bowel diseases (IBDs) or trigger flare-ups for those who have an IBD.
Additionally, if you have a lot of GI symptoms, you may find that milk alternatives made without gums (such as gellan gum or locust bean gum) sit best with your system. Although these ingredients are considered safe, they can be difficult to digest—and that can cause a lot of discomfort if you have compromised gut health, says Functional Medicine Registered Dietitian Brigid Titgemeier. (Just remember that if a product is free of gums, you need to shake the bottle well before drinking, as the ingredients will separate.)
Some milk alternatives can be a great source of calcium, which can be challenging to get for dairy-free eaters. This calcium is added—often in the form of calcium carbonate—and can provide about 30% of the daily recommended intake. However, know that added minerals and vitamins typically come along with stabilizing gums (so the nutrients remain suspended in the drink and don’t settle to the bottom of the container). If you opt for a product with few ingredients to avoid stabilizing gums, you will also miss most of the additional calcium. Be sure you make up for it in the rest of your diet.
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Lastly, Titigemeier adds, if you can, select organic, non-GMO milk alternatives to avoid pesticides and other chemicals that may mess with your metabolic health.
The Worst Milk Alternatives for Blood Sugar
Not all plant-based milks are created equal. Certain base ingredients are more likely to spike blood sugar:
Oat milk: Of all the options, “oat milk is the worst for blood sugar,” says Titgemeier. Even if an oat milk is unsweetened, the nutrition label will list added sugars. That’s because during the manufacturing process, enzymes are added to break down oat starch so the milk is creamy. Because the longer chains of oat carbohydrates are broken down into shorter chains of simple sugar like maltose, it is considered added sugar on a nutrition facts label.
Of all the options, “oat milk is the worst for blood sugar,” says Titgemeier. Even if an oat milk is unsweetened, the nutrition label will list added sugars. That’s because during the manufacturing process, enzymes are added to break down oat starch so the milk is creamy. Because the longer chains of oat carbohydrates are broken down into shorter chains of simple sugar like maltose, it is considered added sugar on a nutrition facts label. Rice milk: Oat and rice milk are naturally higher in carbs—especially compared to nut milks—because the grains themselves have more carbs than nuts. And with 22 grams of carbohydrates and not even 1 gram of fiber or protein per cup, rice milk, even unsweetened, is very likely to trigger a blood sugar surge.
5 Milk Alternatives to Consider
On the other hand, the five milk alternatives below stand out for their nutritional and metabolic health benefits. Be sure to always look for unsweetened! Remember to always read the labels because every brand of plant-based milk has slightly different ingredients and nutritional profiles can vary by a fair amount. (For example, one brand of cashew milk has 130 calories per cup, while another has 25 calories per cup.) This will depend on the ratio of nuts to water, which varies with each brand.
How to Make Your Own Milk Alternative
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Avoid added sugars, gums, and other unnecessary ingredients by making your own milk alternative at home. If you have a high-speed blender (and ideally some cheesecloth), it’s easy. You can always double or triple the recipe during a weekend meal prep to help set you up for success during the week. Try this recipe from Titgemeier.
1 cup almonds, cashews, walnuts, or hazelnuts
3 cups filtered water
Dash of salt
Soak nuts in water for at least 12 hours. (Softer nuts like cashews do not need to be soaked as long.) Rinse and drain nuts, then transfer to a blender. Add water and blend well for several minutes until mixture is smooth and creamy. Strain through a cheesecloth or nut milk bag into a large bowl. (You can dehydrate the remaining pulp to make almond flour.) Clean out the blender. Pour strained nut milk back into the blender and add salt. Blend for a few seconds to incorporate. Store in an airtight container in the fridge.
In addition to using different nuts, customize your nut milk by adding:
1 pinch spice (such as cinnamon, which helps lower blood sugar)
1 tsp vanilla or 1 vanilla pod
1-2 tbsp raw cacao powder
1 oz (about 6) Brazil nuts, for added creaminess and selenium for a metabolic boost
How to Shop for Milk Alternatives
If you’d rather buy than DIY, a few milk alternatives stand out for their ingredients and nutrition. Our favorites include:
Keto Means
Photo: karina zhukovskaya
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